<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>列表过滤</title>
    <script src="../js/vue.js"></script>
  </head>

  <body>
    <div id="root">
      <h2>人员列表</h2>
      <input type="text" placeholder="请输入名字" v-model="keyWord" />
      <ul>
        <li v-for="p in filPersons" :key="p.id">
          {{p.name}}-{{p.age}}-{{p.sex}}
        </li>
      </ul>
    </div>
  </body>
  <script>
    Vue.config.productionTip = false;

    // 用watch实现
    // #region
    /* new Vue({
        el: '#root',
        data: {
            keyWord: '',
            persons: [
                { id: '001', name: '马冬梅', age: 36, sex: '女' },
                { id: '002', name: '周冬雨', age: 37, sex: '女' },
                { id: '003', name: '周杰伦', age: 47, sex: '男' },
                { id: '004', name: '温兆伦', age: 57, sex: '男' }
            ],
            filPersons: []
        },
        watch: {
            keyWord: {
                immediate: true,
                handler(v) {
                    // console.log(v);
                    this.filPersons = this.persons.filter((p) => {
                        return p.name.indexOf(v) !== -1
                    })
                }
            }
        }
    }) */
    // #endregion

    // 用computed实现
    new Vue({
      el: "#root",
      data: {
        keyWord: "",
        persons: [
          { id: "001", name: "马冬梅", age: 36, sex: "女" },
          { id: "002", name: "周冬雨", age: 37, sex: "女" },
          { id: "003", name: "周杰伦", age: 47, sex: "男" },
          { id: "004", name: "温兆伦", age: 57, sex: "男" },
        ],
      },
      computed: {
        filPersons() {
          return this.persons.filter((p) => {
            return p.name.indexOf(this.keyWord) !== -1;
          });
        },
      },
    });
  </script>
</html>
